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Design of high efficiency, low profile, low voltage converter with integrated magnetics

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4 Author(s)
Chen, W. ; Virginia Power Technol. Inc., Blacksburg, VA, USA ; Hua, G. ; Sable, D. ; Lee, F.

This paper presents an innovative design for a high efficiency, low profile, low voltage DC-DC power converter module intended for card mounted applications in a distributed aircraft power system. An innovative integrated magnetic structure for the half-bridge power converter lumps all the magnetic components into one structure and reduces the number of magnetic terminations. By incorporating advanced hybrid power packaging with the proposed integrated magnetic technique, a preliminary hybrid module of 1.6"×2.0" footprint and 0.21" height was developed. An overall efficiency (including the control circuit and power stage) of 90% was achieved for a 3.3 V, 100 W output operating at a 500 kHz switching frequency. The new integrated magnetic structure can be extended to other topologies

Published in:

Applied Power Electronics Conference and Exposition, 1997. APEC '97 Conference Proceedings 1997., Twelfth Annual  (Volume:2 )

Date of Conference:

23-27 Feb 1997